Description
The WP ULike plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `[wp_ulike_likers_box]` shortcode `template` attribute in all versions up to, and including, 5.0.1. This is due to the use of `html_entity_decode()` on shortcode attributes without subsequent output sanitization, which effectively bypasses WordPress's `wp_kses_post()` content filtering. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The post must have at least one like for the XSS to render.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
alimir WP ULike – Like & Dislike Buttons for Engagement and Feedback
Default version status: unaffected
0 to ≤ 5.0.1affected
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/74a7db23-f91c-452b-bc24-58fda69caf17?source=cve ↗
- https://plugins.trac.wordpress.org/browser/wp-ulike/trunk/includes/hooks/shortcodes.php#L209 ↗
- https://plugins.trac.wordpress.org/browser/wp-ulike/trunk/includes/functions/utilities.php#L251 ↗
- https://plugins.trac.wordpress.org/browser/wp-ulike/trunk/includes/functions/utilities.php#L226 ↗
- https://plugins.trac.wordpress.org/browser/wp-ulike/trunk/includes/functions/general.php#L375 ↗
- https://github.com/Alimir/wp-ulike/commit/3dcce696ea251b3733448332cc167e03b2a17c12 ↗
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3475381%40wp-ulike%2Ftrunk&old=3457255%40wp-ulike%2Ftrunk&sfp_email=&sfph_mail= ↗